Biology - Comprehensive Mock Test 48

Question 471 Easy

Artificial pace maker is transplanted in ?

A) Inter auricular septum B) Below the collar bone C) Inter ventricular septum D) Right auricle

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Question 472 Easy

Arteries are best defined as the vessels which ?

A) Carry blood from one visceral organ to another visceral organ B) Supply oxygenated blood to the different organs C) Carry blood away from the heart to different organs D) Break up into capillaries which reunite to form a vein

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Question 473 Easy

Anticoagulant of fresh water leech is ?

A) Sodium citrate B) Heparin C) Hirudin D) Chelating agent

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Question 474 Easy

In sun our face becomes reddish due to ?

A) Breakup of RBC and release of haemoglobin B) Expansion of blood capillaries C) Effect of light D) Irritation of skin

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Question 475 Medium

An adult human has systolic and diastolic pressures as?

A) 80 mm Hg and 120 mm Hg B) 120 mm Hg and 80 mm Hg C) 50 mm Hg and 80 mm Hg D) 80 mm Hg and 80 mm Hg

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Question 476 Easy

All arteries carry oxygenated blood, except ?

A) Pulmonary artery B) Renal artery C) Hepatic artery D) Cardiac artery

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Question 477 Easy

Adrenaline directly affects ?

A) Oxyntic cells of stomach B) Sinoatrial node C) Islet of Langerhans D) Dorsal root ganglia of spinal cord

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Question 478 Easy

A muscular wall is absent in ?

A) Capillary B) Vein C) Venule D) Arteriole

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Question 479 Medium

A large proportion of oxygen is left unused in the human blood even after its uptake by the body tissues. This O2 ?

A) Helps in releasing more O2 to the epithelium tissues B) Acts as a reserve during muscular exercise C) Raises the pCO2 of blood to 75 mm of Hg D) Is enough to keep oxyhaemoglobin saturation at 96%

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Question 480 Medium

Which one of the following statements is correct regarding blood pressure?

A) 190/110 mmHg may harm vital organs like brain and kidney B) 130/90 mmHg is considered high and requires treatment C) 100/55 mmHg is considered an ideal blood pressure D) 105/50 mmHg makes one very active

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